diff --git a/wagtail/search/tests/test_elasticsearch5_backend.py b/wagtail/search/tests/test_elasticsearch5_backend.py
index bbbc08df4..ff00efaaa 100644
--- a/wagtail/search/tests/test_elasticsearch5_backend.py
+++ b/wagtail/search/tests/test_elasticsearch5_backend.py
@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 import datetime
 import json
-import unittest
 
 import mock
 from django.db.models import Q